PLANT PP2 PT3

Question 1

Any physiological response prompted by changes in day or night length is

Answer 1

Photoperiodism

Question 2

Photoperiodism influences

Answer 2

flowering in some plants.

Question 3

Photoperiodism requires participation of a biological clock and a plant photoreceptor called

Answer 3

phytochrome.

Question 4

what is a plant photoreceptor called

Answer 4

phytochrome.

Question 5

Flowering occurs in response to ___ such as

Answer 5

environmental signals, day length

Question 6

In monocots, flower parts occur in

Answer 6

threes and multiples of three

Question 7

In eudicots, flower parts occur in

Answer 7

fours or fives and multiples of four or five

Question 8

Staminate flowers are

Answer 8

males

Question 9

. Carpellate flowers are

Answer 9

female

Question 10

the transfer of pollen from an anther to the stigma of a carpel is

Answer 10

Pollination

Question 11

Self-pollination occurs if the pollen is from

Answer 11

the same plant

Question 12

Cross-pollination occurs if the pollen is from

Answer 12

a different plant

Question 13

During fertilization, a pollen grain lands on

Answer 13

the stigma

Question 14

During fertilization, the pollen passes between the

Answer 14

stigma and style to reach the ovule

Question 15

When double fertilization occurs, one sperm nucleus unites with the ___, producing a___

Answer 15

egg nucleus, producing a 2n zygote

Question 16

When double fertilization occurs, the other sperm nucleus unites with the ___, forming a____,which develops___

Answer 16

polar nuclei, forming a 3n endosperm nucleus, which develops into the endosperm

Question 17

A mature seed contains the (3)

Answer 17

embryo, stored food, and the seed coat

Question 18

Development of a eudicot embryo, after double fertilization, the zygote divides repeatedly to form a

Answer 18

pro-embryo and a suspensor

Question 19

During the globular stage, the pro-embryo is a

Answer 19

ball of cells

Question 20

During the globular stage the outermost cells will become

Answer 20

dermal tissue